<template>
  <section>
    <header class="top_tips">
      <span class="num_tip" v-if="fatherComponent == 'home'">{{level}}</span>
      <span class="num_tip" v-if="fatherComponent =='item'">题目{{itemNum}}</span>
    </header>
    <div v-if="fatherComponent == 'home'">
      <div class="home_logo item_container_style"></div>
      <router-link to="item" class="start button_style"></router-link>
    </div>
     <div v-if="fatherComponent == 'item'">
      <div class="item_back item_container_style">
        <div class="item_list_container" v-if="itemDetail.length >0">
            <header class="item_title">
                {{itemDetail[itemNum-1].topic_name}}
            </header>
            <ul>
                <li v-for="(item,index) in itemDetail[itemNum-1].topic_answer" class="item_list" @click="choosed(index,item.topic_answer_id)">
                    <span class="option_style" v-bind:class="{'has_choosed': choosedNum==index}">{{chooseType(index)}}</span>
                    <span class="option_detail">{{item.answer_name}}</span>
                </li>
            </ul>
        </div>
        </div>
        <span class="next_item button_style" @click="nextItem" v-if="itemNum < itemDetail.length"></span>
        <span class="submit_item button_style" v-else @click="submitAnswer"></span>
       <!--  <div class="item_list_container" v-if="itemDetail.length > 0">
         <header class="item_title">{{itemDetail[itemNum-1].topic_name}}</header>
         <ul>
           <li v-for="(item, index) in itemDetail[itemNum-1].topic_answer" @click="choosed(index, item.topic_answer_id)" class="item_list">
             <span class="option_style" v-bind:class="{'has_choosed':choosedNum==index}">{{chooseType(index)}}</span>
             <span class="option_detail">{{item.answer_name}}</span>
           </li>
         </ul>
       </div> -->
      </div>
      <!-- <span class="next_item button_style" @click="nextItem" v-if="itemNum < itemDetail.length"></span>
      <span class="submit_item button_style" v-else @click="submitAnswer"></span> -->
    </div>
  </section>
</template>
<script>
import { mapState, mapActions } from 'vuex'
export default {
  name: 'itemcon',
  data() {
    return {
      itemId: null, //题目ID
      choosedNum: null, //选中答案索引
      choosedId: null //选中答案id
    }
  },
  props:['fatherComponent'],
  computed: mapState([
    'itemNum', //第几题
    'level', //第几周
    'itemDetail', //题目详情
    'timer' //计时器
  ]),
  created() {
    //初始化信息
    this.initializeData();
    document.body.style.backgroundImage = 'url(/static/img/1-1.jpg)';
  },
  methods: {
    ...mapActions([
      'addNum', 'initializeData'
    ]),
    chooseType: type => {
        switch(type){
            case 0: return 'A';
            case 1: return 'B';
            case 2: return 'C';
            case 3: return 'D';
        }
    },
    choosed(type,id){
        this.choosedNum = type;
        this.choosedId = id;
    },
    //点击下一题
    nextItem(){
        if(this.choosedNum!=null){
           this.choosedNum=null;
           //保存答案,题目索引加一，跳到下一题
           this.addNum(this.choosedId);
        }
        else{
            alert("请选择一个答案");
        }
    },
    //提交答案算分数
    submitAnswer(){
       if(this.choosedNum!=null){
        this.addNum(this.choosedId);
        clearInterval(this.timer);
        this.$router.push('score');
        this.choosedNum=null;
       } 
       else{
        alert("您还没有选择答案");
       }
    }
  },
  /*,
    computed: {
   
    }*/
}

</script>
<style >
.top_tips {
  position: absolute;
  height: 7.35rem;
  width: 3.25rem;
  top: -1.3rem;
  right: 1.6rem;
  background: url(/static/img/WechatIMG2.png) no-repeat;
  background-size: 100% 100%;
  z-index: 10;
}

.num_tip {
  position: absolute;
  left: 0.48rem;
  bottom: 1.1rem;
  height: 0.7rem;
  width: 2.5rem;
  font-size: 0.6rem;
  font-family: '黑体';
  font-weight: 600;
  color: #a57c50;
  text-align: center;
}

.item_container_style {
  height: 11.625rem;
  width: 13.15rem;
  background-repeat: no-repeat;
  position: absolute;
  top: 4.1rem;
  left: 1rem;
}

.home_logo {
  background-image: url(/static/img/1-2.png);
  background-size: 13.142rem 100%;
  background-position: right center;
}

.item_back {
  background-image: url(/static/img/2-1.png);
  background-size: 100% 100%;
}

.button_style {
  display: block;
  height: 2.1rem;
  width: 4.35rem;
  background-size: 100% 100%;
  position: absolute;
  top: 16.5rem;
  left: 50%;
  margin-left: -2.4rem;
  background-repeat: no-repeat;
}

.start {
  background-image: url(/static/img/1-4.png);
}

.next_item {
  background-image: url(/static/img/2-2.png);
}

.submit_item {
  background-image: url(/static/img/3-1.png);
}

.item_list_container {
  position: absolute;
  height: 7.0rem;
  width: 8.0rem;
  top: 2.4rem;
  left: 3rem;
  -webkit-font-smoothing: antialiased;
}

.item_title {
  font-size: 0.65rem;
  color: #fff;
  line-height: 0.7rem;
  text-align: left;
}

.item_list {
  font-size: 0;
  margin-top: 0.4rem;
  width: 10rem;
  text-align: left;
  }
span {
    display: inline-block;
    font-size: 0.6rem;
    color: #fff;
    vertical-align: middle;
    text-align: left;
}
  .option_style {
    height: 0.725rem;
    width: 0.725rem;
    border: 1px solid #fff;
    border-radius: 50%;
    line-height: 0.725rem;
    text-align: center;
    margin-right: 0.3rem;
    font-size: 0.5rem;
    font-family: 'Arial';
  }
  .has_choosed {
    background-color: #ffd400;
    color: #575757;
    border-color: #ffd400;
  }
  .option_detail {
    width: 7.5rem;
    padding-top: 0.11rem;
  }


</style>
